- a person who is a member of a group, organization, society, etc.
- a person belonging to a limited circle of persons who understand the actual facts in a situation or share private knowledge: Insiders knew that the president would veto the bill.
- a person who has some special advantage or influence.
- a person in possession of corporate information not generally available to the public, as a director, an accountant, or other officer or employee of a corporation.
- a member of a specified group
- a person with access to exclusive information
